Apparatus for use in the manufacture of wheel-tire covers.



No. 766,194. PATENTBD AUG. 2, 1904.

' F. s. ORNSTIEN. APPARATUS FOR USE IN THE MANUFACTURE OF WHEEL TIRE COVERS.

APPLIOATION TILED FEB. 24, 1903. RENEWED APR. 5. 190*. NO MODEL. 3 SHEETS-SHEET 1.

INVENTDR/A .MTovn e15,

PATENTED AUG. 2, 1904.

F. S. ORNSTIEN APPARATUS FOR USE IN THE MANUFACTURE OF WHEEL TIRE COVERS,

APPLIOATION FILED FEB. 24. 1 903. RENEWED APR- 5, 1904.

3 SHEETS-SHEET 2.

N0 MODEL.

INi/ENTOP Frederick SW6 Omdww (Mira/VIA 4 '7 No. 766,194. v PATENTED A G. 2, 1904.

' P. ORNSTIEN. APPARATUS FOR USE m THE MANUFACTURE OF WHBELTIRE COVERS. APPLIUATION FILED FEB 24, 1963 RENEWED APR. 6. 1904.

H0 MODEL. 3 BHBE'ITS-SHEET 3.

INVENTOR NES3ES UNI ED STATES Patented August 2, 1904. I

PATENT OFFICE- FREDERICK SAUL ORNSTIEN, OF KENSINGTON, VICTORIA, AUSTRALIA.

SPECIFICATION forming part of Letters Patent No. 766,194, dated August 2, 1904.

Application riled February 24, 1903. Renewed April 5, 1904. Serial lio- 20l,'74=3. (No model.)

10 a whom, it Huey concern:

Be it known that I, FREDERICK SAUL ORN- srrnu, a subject of the King of Great Britain, residing at hilacaulay Road,Kensington, in the State of Victoria, Australia, have invented certain new and useful Improvements in Apparatus to be Used in the Manufacture of lVheel- Tire Covers, of which the following is a specification.

This invention has been devised to provide certain improvements in or connected with appa: us to be used in the manufacture of covers .vr pneumatic and other flexible wheelas. The cover in this apparatus is subje-oed to heat and pressure. and. the tire leaves apparatus in a flattened form and is thus finished, except that it is to be afterward s-s ll into the round form to receive the Lunatic tube and to lit upon the wheel; but rounding of the cover forms no part of a present invention.

In order that the invention may be clear, I will describe same with reference to the accompanying drawings.

Figure 1' shows a front-elevation of the appa- '-tus; Fig. 2, a side elevation, partly in scc- Fig. 3, a back elevation in part: Fig. i, a YiSW corresponding with Fig. 2, but with parts in altered position. Fig. shows presser plates and wedge in position with pressure removed. Fig. 6 shows afront view of the cone and its frame, partly in section.

I employ a longitudinal central screwthreaded shaft oi, preferably set horizontally,

- supported with suitable standard hearing or this annular casing is preferably provided forming the rim around-the edge of the tirecover. The object of the annular dishing is that the tire when compressed and vulcanized by the apparatus now being 'described may be thicker at its central line than near the edges where the wires are. As an alternative the grooves and dishing may be in the presserplates hereinafter described. I

inside the casing and constructed in conformity with the inner dished annulus above referred to are aseries of presser-plates f, forming segments of a circle, of which the screw shaft is the center. These presserplates are preferably four in number and are accompanied by four other corresponding but shorter prcsser-plates g for lilling in the peripheral gaps or spaces between the four larger ones. These smaller presser-plates are formed wedgewise, so as to engage with corresponding out er of the four larger prcsscrplates and to assist in forcing out the latter when their dilation is required. All of these curved presser-plates are provided with stancli shanks j (preferably square in section,) the latter passing through rigid bearing box or boxes/z, provided with means for lubricating same, and proceed in toward the screwed shaft (2, first hereinbefore referred to. The shanks of the longer presser-plates f are approximately about half an inch more than the shanks of the shorter or wedged shaped presser-plates g, so that the latter may come into operation at ,a later period than the former.

y The shanks have rods g connected to them, and tnese rods pass through lugs ll, formed on the boxes l1, and beneath said lugs the rods are encircled by spiral springs that are heldin place by nut g, the object being to draw back the presser-plates when the pressure is removed. The boxes 72 have lugs 7i and are ranged to slide freely screw-shaft. In lieu of the cone a tapered erated upon.

The metal cone j is mounted upon the scre\ shaft a-and has a plaincentral cylindrical bore running through its length and is arbut firmly along the block may be employed of octagonal or other shape to suit the number of shanks to be opis a block-nut it with adjustable arms to en'- able the hand of the operator to turn such nut behind the cone or tapered block, so as to move same along the shaft 4. The cone or tapered block has a recessed fra'me y", and the block-nut Z5 has an extension 1i? entering same.

Fixed to the-end of the screw-shaft and out-- side the standard-bearing thereof is mounted a hand-wheel Z, provided with arms somewhat after the pattern of a marine rudder-wheel, or a handle Zfor-turning it to move back or forward the back plate in and the parts carried by it upon the screw-shaft a and the rods 12.

In operation the strip of rubber and other wardly-pointing ends of all the shanks f g,

the ends of these being cut away or curvedto conveniently engage with theangle of the cone, the adjustablelock-nut l; being screwed up along the shaft, so as to press against the cone and slightly force it between the ends of the shanks. This brings the presser-plates of the longer shanks f into moderate engagement with the strip of rubber and other material forming the tire-cover. At this stage the shorter shanks g are met by the increasing diameter of the cone in its forward movement. The nut is at the base of cone is revolvedsufficiently tosqueeze forward the' four wedge shaped presser-plates in their places, forming a complete-annular presserplate and tending to dilate the whole of the peripheral line formed by such plates. Further turning of the screw shaft or nut on same increases thispressure until the cover (which has been squeezed or strained into the dished plate) assumes the necessary sectional thickness.

Steam is turned into the casing Z) for a suflicient, time and at a suificient pressure or heat to cause the necessary vulcanizing action to take place. When the above operation has been satisfactorily performed, the cone is drawn out of engagement with the shanks and the springs come into operation to draw in the presser-plates, and thus release the pressure Mounted upon the screw-shaft preferably,

the

from the tire-cover. The large hand-whcel Z or analogous appliance is now turnedtin the opposite direction to draw back the bqdy m, and the vulcanized cover is then removed, being in a flattened form.

I w ould have it understood that I may cause the cone and back plate to be operated by any mechanical or hydraulic power other than that described.

. The whole of the parts constituting my apparatus are preferably constructed of steel, but may be of other suitable metal or material.

- The springs hereinbefore mentioned are set,

from the big or small plates toward the center of the machine; but I do not confine myself arbitrarily to the employment of a spiral spring for each of such shanks, and I may in some cases dispense 'with their use in'connection with the shanks ofthe wedge-shaped presser-plates;

Having thus described my invention, What I claim, and desire to secure by Letters Patplates and wedges from the annular box to allow of insertion and withdrawal of tirecover, substantially as and for the purposes described.

2. Apparatus to be used inthe manufacture of wheel-tire covers-comprising, in combination, annular box, a series of presser-plates around the inside of said box with adjacent bevel edges, wedges for insertion between the said presser-plates, such wedges and presserplates being mounted upon shanks arranged to move in a frame and having bevel ends, a cone or tapered block mounted on screw-shaft for insertion between said shankends and meansfor actuating the cone or block back and forward on the shaft, substantially as and I for the purposes described.

3. Apparatus to be used in the manufacture of wheel-tire coverscomprising, in combination, annular box, a series of presser-plates in tension so as to exert a pull around the inside'of said box with adjacent bevel edges, wedges for insertion between the said presser-plates, such wedges and presser plates being mounted'upon shanks, a central screw-shaft supported on bearings, a back plate at carrying box A for the reception of the shanks, the shanks. having beveled ends, a cone or tapered block mounted on screwrod for insertion between such shank ends, a spring connection between the shanks and frame for returning the shanks against the action of the cone or tapered block, a recess in the plate m to receive the cone or block, means for moving the back plate back and forward on the screw-rod and means for moving the cone or block back and forward into and out 'of engagement with the shanks; substantially as and for the purposes described.

at. Apparatus to be used in the manufacture of Wheel-tire covers comprising, in combination, annular box 7) supported on base and having its interior face dished and with annular groove at each side of the dished portion, a series of presser-plates" f around the inside of said box and with adjacent bevel edges, Wedges g for insertion between the said pressenplates, such Wedges being mounted upon shanks g, a central screw-shaft asupported on bearing a, a back plate on mounted on the shaft a, screw-rods a connected with the annular casing "and with the plate m and bearing on arms 0 the shanks having beveled ends, those pf the presser-plates being longer than those of the wedges, a cone or tapered block mounted on screw-rod a for insertion between such shank ends, rods connested with shanks and springs g on the rods engaging with the boxes It, a recess in the plate in to receivethe cone or tapered block, a frame Z1 on the cone or tapered block and a block Z on the screw-rod a engaging with the frame. whereby the cone or tapered block'is moved back and forward on the screw-rod, a hand-wheel Z on the screw-rod a to move back or forward the body 912, substantially. as and for the purposes described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

, FREDERICK SAUL ORNSTIEN.

"itnesses A. ,O. SAonsLLTI,

A. MARKER. 

